Software Engineer (Mid-level)

United States Digital Space LLC; Greater London; On-site; GBP 50,000 - 65,000; Full time

Job summary

United States Digital Space LLC is seeking a mid-level Software Engineer to join a climate tech start-up based in London. In this hybrid role, you'll work with a small, dynamic team to develop core products using Python and contribute directly to impactful projects.

The position requires strong full-stack experience, collaboration skills, and a passion for climate technology. A salary range of £50,000 - £65,000 is offered, along with several benefits.

Qualifications

• Experience as a Software Engineer with hands-on experience in full-stack environments.
• Desire to maintain production software in a fast-moving product environment.
• Strong fundamentals in complex, evolving production codebases.

Responsibilities

• Work with a high-performing team to grow and develop the core product.
• Collaborate across product and engineering teams.
• Contribute to a pragmatic and collaborative engineering culture.

Skills

Full-stack experience

Python (preferred)

Strong object-oriented fundamentals

Strong communication skills

Collaborative approach

Desire for rapid iterative delivery

Tools

Django or similar frameworks

Cloud infrastructure

Experience in renewable energy

Job description

Software Engineer (Mid Level) – Climate Tech Start Up

£50,000 - £65,000
London - Hybrid

This is a great chance to join a well‑funded start‑up in the climate tech space and make a real impact as they continue to grow. The team is using Python but is open to a range of backgrounds – we are looking for strong engineers with a passion for all things climate tech and who thrive in a start‑up environment.

This is a hybrid role – average 3 days a week in Waterloo.

The Role

You will work with a small, friendly and high‑performing team to continue to grow and develop the core product. The engineering culture is pragmatic and collaborative and you will have the chance to collaborate, have impact and start to learn and grow from day one.

What You Will Bring

• Experience as a Software Engineer with good hands‑on experience in full‑stack environments (preference for Python but open to any background if you are willing to work with Python).
• Desire to ship and maintain production software in a fast‑moving product environment.
• Demonstrated experience working with a small team, preferably in start‑ups.
• Strong object‑oriented fundamentals applied to complex, evolving production codebases.
• Strong communication skills and a collaborative approach to working across product and engineering teams.
• Energy for rapid iterative delivery cycles rather than resistance to them.

Bonus Points

• Experience with Django or similar Python‑based backend frameworks.
• Hands‑on experience with cloud infrastructure, ideally GCP.
• Industry experience in renewable energy, utilities, heat pump technology, or construction.
• A background in product‑focused engineering environments.

The Company

Our client is a product‑led technology business operating in a high‑growth, mission‑driven sector with a genuine positive impact at its core. The team is growing at a real pace and this is the kind of environment where strong engineers progress quickly, take on meaningful responsibility early, and contribute directly to work that matters.

Salary

£50,000 - £65,000 plus great benefits.

Next Steps

If you are a mid‑level Python engineer with strong production engineering experience and a genuine desire to work on technology that makes a real world difference, please share your CV by clicking apply. For any questions, reach out directly.